PURPOSE: To improve a pressure loss in a flow passage, make a uniform distrubution of air speed, improve an efficiency of a blower, improve an energy saving and reduce noise totally and to make a small-sized air cleaner.
CONSTITUTION: A sound absorption duct 5 connected to a filter 3 from a blower 2 through a pressure chamber 4 is so spirally formed that its cross-sectional area increases gradually. A duct outer plate 7 is of a porous plate 11. An air layer is formed between the porous plate 11 and an outer late 1 of a main body and then an air flowing into the filter part at an acute angle is formed. With such an arrangement, a uniform formation of distribution of air speed, the efficiency of a blower as well as the energy saving can be improved and noise is totally reduced. Then, an air cleaner device having a high cleaning ability and capable of being made in a small-size can be provided.
HONMA KEIICHI
KOSOTO SOICHI
SUNAKAWA MASARO
TOMITA TAKASHI
HITACHI TECHNO ENG